Lubricating device



C. G. BUTLER.

LUBRICATING DEVICE. APPLICATION FILED `f `a.2ai w19.

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wmf/QM CYDE Gr. BUTLnR, DF DAYTON, OHIO, ASSIGNOR T0 TEE AUTDEO'I'VE IHANUFAC T'URlNG COMPANY,

OF DAYTON, OHIO, A CORPORATION OF OHIO.

LUBRICATING' DEVEC'E.

'Specification of Letters Patent.

Application filed April 23, 1919. Serial No. 292,006.

VTo all whom, t may cancer/t:

Be it known that l, CLYnn G. BUTLER, a citizen of the United States, residing at Dayton, in the county of Montgomery and rState of Ohio, have invented certain new and useful improvements in Lubricating Devices, of which the following is a specification.

This linvention relates to new and useful 1o improvements in lubricating devices.

= he primary object of this invention is to provide a lubricating device that is an efficient substitute for the common type of grease andoil cups that require much time, to till. Furthermore, the caps are easily lost from said cups, with the result that dust and dirt fly into the cui) and mix `with the lubricant.

My invention not only obviates the above diiiiculties, but provides -a cup to which a coupling onthe end of a iiexiblehose on the pump, can be readily and firmly secured, for the purpose of forcing a lubricant quickly and under high pressure into said cup, with no danger of dust or dirt coming in contact with the oil or grease.

@ther important and incidental objects will be brought out lin the following specification and particularly set forth in the subjoined claims. Y

My invention is illustrated in the accompanying drawings, of which Figure l is an elevational view, partly in section, of the apparatus. Fig. 2 is a top plan view of the grease cup and coupling. Fig. 3 is a side view of the dome-shaped valve within the cup. F ig. 4 is a plan view of the blank from which said valve is made. Fig. 5 is a vertical sectional view of the grease cup,

- 4o showing the valve depressed to a position to admit the grease. And Fig. 6 is a vertical sectional view of my improved cup attached to one in which the grease-is automatically forced as needed to the part to be lubricated.

Throughout the specification anddrawings, similar refe-rence characters denote corresponding parts.

Referring to the accompanying drawings,

the numeral l designates a hollow cup body terminating at its bottom marginal edge in a ntit`rpoition 2 and projecting nipple 3. Y The latter is adapted to be readily crewed into any place requiring lubricatio The cup, while particularly adapted for use in are diilicult, and

automobiles, may be employed to supply oil or grease to any part requiring lubrication.

That portion of the cup body 1 above the nut portion f2 is preferably cylindrical, with a beveled top marginal edge. central portion vthere is provided a lubricant inlet-opening which is normally closed by a dome-shaped check valve 4' that is preferably' formed from a metal blank shaped lille a cross. (See Fig. et.) The arms of the latter are bent downwardly to 'forni the dome-shaped valve fl shown in Fig. 3. There are thus formed in said valve four outwardly tapering 'openings 5 through which oil or Vgrease may enter its hollow interior from the cup body 1, when said Valve is forced below the top central opening in said body to admit the lubricant thereto.

The upper end of the dome-shaped valve 4 is held tightly in the central opening in the cup body 1, by a coil spring 6, whose lower portion seats upon anannular ledge in the nut portion 2 and whose upper end bears against the interior top portion of the dome-shaped check valve 4 to which it readily accommodates itself. When the valve 4 is forced downwardly against the Sil tension of the spring 6, as shown in Fig. 5,

it will so clear the central opening in the cup body l as to permit the lubricant to be forced into it, whence it will enter the dome-shaped valve through the openings 5 for a forced passage through the nipple 3 into the device or structure into which said nipple is screwed for the purpose of supplying lubricant thereto. Then the valve 4 is fully depressed, its lower portion will engage and rest upon the annular ledge inthe nut portion 2 of the nipple 3, as shown in Fig. 5. The cup body may be attached in any other way than that described to a device or structure to be lubricated, whether the latter be a part of an automobile, stationary machine or other apparatus.

When my improved cups are secured in the places where cups are needed,.a grease gun may be readily secured to, and removed from, each cup in succession by the coules i coupling member 11 that is adapted be .fitted over the cup body 1, Figs. and 2. Contained in a soclret portion ithin the member 11, is an annular gasket that is adapted to engage and piress dcwrmvardly below the central opening in the cup body 1, the checit valve fr when said member 11 is forced over said cup body. Before this presure is exerted7 the pinsS be in a position to enter the notches 10, and after sulilcient force has been exerted to press the valve 4 below its seat, the coupling member 11 should be turned suiliciently to bring said pins within the annular groove 9 to lock said coupling member to the cup body for the lubricant-{illing operation now to be described.

Referring to Figs 1 and 2, the couplin member 11 preferably has a right-anvlcd bend 18 which contains abore 14 that communicates, at its forward end, through the annular gasket 12 and central opening in the up body 1, with the interior of the latter when. the valve 4 is below said opening as inst/described. Cou led to the outer end of the bend 13 by a 'coupling nipple 15, is one end of a flexible tube 16, the other end of which is connected to a. high. pressure grease Cfun. 17. A sight opening 18 is provided in tA e bend 13 of the coupiing member 11 to expose thc lubricant passing there through, to view.

It will now readily be seen that when it is desired to force a lubricant into a cup 1, it.

is first necessary to place the coupling me1n ber 11 over the latter in such a position that the pins 8 will enter the notches 10, whereupon suliicient pressure is applied to the member 11 to forcr4 the valve L1 downwardly. The coupling member 11 is then turned a sufficient distance to bring the bayonet pins i within the annular groove 9, whereupon said coupling member will be locked to the cup body, withA the valve 4 below the openin the latter to permit 'it to receive an injection of lubricant from the gun 17 through the flexible tube 16, bore le andannular gasket 12. After entering the cup body 1 through its central opening, said lubricant will be forced into the dome-shaped check valve fl, through its openings 5, antthen through the nipple 3 to the place where the iubricant is needed. After suficient lubrillant has been forced into said cup to supplyt'ne needed amount, the coupling member 11 may be uickly turned in the reverse direction a su cient distance to bring the pins .E within the notches 9, whereupon the said coupling member may be withdrawn from the cup body, and its valve closed by the spring (i to prevent the entrance of dust or dirt and effectively to seal it against the egress of the oil'or grease.

In 6 l have illustrated a cup of the automatic-pressure type, equipped with my improved lubricating devicez In sald'iigure the numeral 1.9.des1gnates a hol- `low cylindricallA cup which terminates at its lower end in a nipple portion 20. lMovable in the cup 19 is a plunger 21 which is attached to a tubular stem 22 that communi- Cates with that portion of the cup below said plunger. Surrounding said stem between the top of the cup 19 and the plunger 21, is a coil spring 23 that exerts its pressure against said plunger automatically to force the lubricant to the place where and when it is needed after said lubricant` has been injected into the cup below the plunger.

For the purpose of quickly and efficiently forcing the lubricant into the cup 19, one of my' improved cups 1 is secured to the upper end or" the stem 22. Now, when it is desired to ll the cup 19 with oil or grease, the coupling member 11 is attached, as before described, to the cup 1 and the n 17 operated, whereupon lubricant wilube forced through the cup 1, andv hollow stem 22, into the cup 19 below the plun r 21 until the latter has been forced therley to its uppermost position in the cup, whereupon the cou pling member 11 may be withdrawn in the usual way from the cup body 1L This il but one of the instances in which my improfed lubricating device may be effectively use Inserted in the rear end of the bend .13 between annular gaskets 24 and 25, is a, glass tube 26 through which the lubricant flows past the sight opening 18. Since the lubricant ilowsthrough the bend 13`under pres- ;.ure,this glass tube is provided, the skets 24 and 25 preventing any of said lu ricant from escaping through the elongated openn 18. (See Fig. 1.)

laving described my invention, I claim:

1. A grease cup of the type described comprising a hollow body portion adapted to be attached to the part to be lubricated and having a central opening in its upper portion, a dome shaped valve having openings in its periphery below its top portion to admit lubricant to its hollow interior, and a coil spring Within said valve, adapted to force it normally into said central open,- ing in the cup, for the purpose specified.

2. A grease cup of the type described comprising a hollow body portion'adapted to be attached to the part to be lubricated, and having a central opening` in lts upper portion., a dome Shaped 'Valvehaving downwardly projecting openings in its periphery below its top portion, said openings tapering downwardly to the bottom edge of the valve kto admit lubricant to its hollow interior, and

a coil spring within said valve, adapted vto force it normally into the central opening in the cup, for the pur ose specified.

3. A grease cup o the type described comprising a hollow body portlon adapted to be attached to the part to be lubricaltedf and' said valve, adapted to force it normally into having a central opening in its .upper porsaid opening, for the purpose specified. l0

`tion, a dome shaped valve formed from a In'testmony where'o` l have hereunto set metal blank shaped like a cross, the arms my hand this 21st day of April, 1919.

5 of the latter being bent downwardly to form A A CLYDE G BUTLER ta erng openings between them lto Admit -4 1u ricant to the interior portion of the valve, 1Witness: and e coil spring within the arm portion oi HoWAnD S. Sutra. 

